Hi,
If you posses more than the basic knowledge on the working of options, then take a look at the straddleplanner.
It is a online option risk manager where you can manage multiple portfolios and strategies of stock and options combined.
straddleplanner has almost all the functionality as a professional risk manager.
I build the site myself (with two friends) based on my experience as a stock option market maker. During this period I have worked with various trading/management tools, off which some were pretty fancy, but all tools where not particular user friendly.
The idea behind the straddleplanner is to create a option position manager which is open and can be used by anyone who knows how options work, without reading thick manuals.
The site is still in a Beta phase, so please let me know if you have any comments or have ideas.
Presently we are still busy to ad additional functionalities so straddleplanner is evolving.
Hope that straddleplanner could be useful to you.
Regards, AJJ